Fire-extinguishing liquid.



UNITED STATES PATENT OFFICE.

JONAS W. AYLSWORTH, OF EAST ORANGE, NEW JERSEY, ASSIGNOB, BY MESNE ASSIGN- MENTS, TO PYRENE MANUFACTURING COMPANY, A- CORPORATION OF DELAWARE.

FIRE-EXTINGUISHING LIQUID.

No Drawing.

To all whom it may concern Be it known that I, JoNAs W. Ans- WORTH, a citizen of the United States, and

a resident of East Orange, in the county of duce an efiicient agent of this character, thecharacteristics of which will be described in the following specification and particularly pointed out in the appended clalms.

My invention consists also in an improved process for extinguishing fires.

It'has long been known that carbon tetrachlorid is an excellent liquid for extinguishing flames. This substance, however, has one very objectionable feature as a fire extinguisher which very materially decreases its efliciency for such purposes. This is the volatility of the substance when heated, the point at which carbon tetra-chlorid volatilizes being so low that when it is used to extinguish a fire which is well under way, the carbon tetra-chlorid is expelled instantly by the heat and the fiames burst out afresh, making it necessary to use far greater quantities of this substance than would be necessary if its boiling point were higher. I find that this difliculty is overcome by dissolving in the carbon tetra-chlorid a substance having a much higher boiling point than that of the carbon tetra-chlorid and serving to retard the rate of volatilization of the latter. Such substances are perhalogenized organic radicals such as perchlorinated naphthalene and di phenyl, hexa chloro ethane, perchloro-triphenyl-benzene, heXa-chloro benzene, etc. These substances have fire extinguishing properties and serve to augment as well as prolong the fire extinguishing effect of the carbon tetra-chlorid. They are also electrically non-conducting In the term; perhalogenized organic radicals men tioned above, I do not mean to limit myself to substances in which all the hydrogen has been replaced by chlorin or other halogen, but only to substances in which the greater part of the hydrogen has been so replaced. While chlorin is the least expensive and the most suitable halogen to use, other halogens, such as bromin, may be used with good re- Speciflcation of Letters Patent.

Patented Sept. 21, 1915.

Application filed May 25, 1909. Serial No. 498,358.

sults. By mixing any of the above named or equivalent substances with the carbon tetra-chlorid, a liquid is obtained which will continue to evolve'flame extinguishing Vapors at all ranges of temperature from the boiling polnt of carbon tetra-chlorid up to and over 600 de rees F. i

My improved re extinguishing liquid is substantially devoid of water and is electrically non-conducting. It has its resistance increased by the presence of the electrically non-conducting ingredient or constitutent consistln of any of the perhalogenized orgame ra 'cals mentioned above. In the use of the liquid in extinguishing fires, some of the perhalogenized organic constituent is thrown down on the burnt material as an electrically non-conducting deposit. This feature is of advantage in extinguishing certain classes of fires, as for example, where an electric arc is formed. In the ractice of my invention in extinguishing es, the l1qu1d compound .is thrown upon the fire to be extinguished and thereby there is liberated a thick, heavy, homogeneous, penetrating, cohering, lingering, blanket of dry gas and vapor which covers closely and extinguishes the fire. f At the same time an electrically non-conducting deposit is thrown down upon the burned material rendering it electrically non-conducting. The comparatively heavy gaseous mantle composed of carbon tetra-chlorid and vapors of the halo genized substances associated therewith is not carried ofi rapidly by the products of combustion but holds together in a dense cloud for a period of appreciable and effective length, enveloping the seat of combustion, shutting off access of air and sinking into the interstices of the burned material, if any interstices be present. The property of the gaseous blanket whereby it preserves its integrity, together with its activity in penetrating the burning material, enables the extinguishing liquid both to effectually smother a blaze and to extinguish thoroughly any subsequent Smolder. When applied to burning liquids, the compound does not scatter these liquids, still burning, without extinguishing them, but at once vaporizes, producing the enveloping and smothering b anket alluded to.

An especially advantageous feature of the present invention is found in the fact that the compound hereinbefore described when volatilized by the heat produces a blanket composed of non-poisonous elements, thus.

The liquid may still further be improved.

for certain purposes by adding thereto certain metallic salts which will serve to coat the charredcarbon after all volatile matter is expelled therefrom and retard its burning. Such salts as finely divided tungstate of soda mechanically mixed with the liquid may be used.

As an example of a composition made in accordance with my invention and having proportions which give excellent results, I give the followingz-Carbon tetra chlorid, 100 parts by weight; chlorinated organic radical, such as perchlorinated naphthalene, that is, tetra-chlor-naphthalene or chloro-naphthalene of higher proportions of chlorin, 2 to 20 parts by weight; perhalogenized benzene, toluene or ethane might be used as equivalents of the per-chlor-naphthalene. be used together with a fine powdered mineral fire-proofing substance held in suspension, such as tungstate of soda, bicarbonate of soda, phosphate of soda or phosphate of ammonia, 5 to 20 parts by weight.

Having nowdescribed my invention, what I claim and desire to protect by Letters Patent is as follows:

1. A fire-extinguishing liquid consisting of carbon tetra-chlorid having dissolved therein a halogenized aromatic hydrocarbon having a boiling point much higher than that of the carbon tetra-chlorid, substantially as described.

2. A fire-extinguishing liquid consisting of carbon tetra-chlorid having dissolved therein a halogenized substitution benzene derivative having a boiling point much higher than that of the carbon tetra-chlorid, substantially as described.

3. A fire-extinguishing liquid consisting of carbon tetra-chlorid having dissolved therein a perchlorinated organic radical having aboiling point much higher than that of the carbon tetra-chlorid, substantially as described.

4. A fire-extinguishing liquid consisting of carbon tetra-chlorid having dissolved Or the above composition might therein a substance having a boiling point much higher than that of the carbon tetrachlorid and serving. to retard the rate of volatilization of the latter, and having mixed therewith a metallic 'salt adapted to coat the charred carbon of the substance burned after all volatile matter is expelled and retard its burning, substantially as described.

5. A fire-extinguishing liquid consisting of carbon tetra-chlorid having dissolved therein a substance having a boiling point much higher than that'of thecarbon tetrachlorid and serving to retard the rate of "olatilization of. the latter, and having mixed therewith finely divided sodium tungstate, substantially as described.

6. A fire-extinguishing liquid consisting of carbon tetra-chlorid having dissolved therein a halogenized substitution benzene derivative having a boiling point much higher than that of the carbontetra-chlorid, and having mixed therewith finely divided sodium tungstate, substantially as described.

7 A fire extinguishing liquid consisting of carbon tetra-chlorid having dissolved therein a substance having a higher boiling point than that of the carbon tetra-chlorid and having flame extinguishing properties, and having mixed therewith a metallic salt adapted to coat the charred carbon of the substance burned after all volatile matter is expelled and retard its burning, substantially as described.

8. A fire extinguishing liquid consisting of carbon tetra-chlorid having dissolved therein a substance having a higher boiling point than that of the carbon tetra-chlorid and having flame extinguishing properties, and having mixed therewith finely divided sodium tungstate, substantially as described.

9. A fire extinguishing liquid containing carbon tetra-chlorid having dissolved therein a halogen derivative of naphthalene, substantially as described.

10. A fire extinguishing liquid containing carbon tetra-chlorid having dissolved therein a chlorin derivative of naphthalene, substantially as described.

11. A fire extinguishing compound consisting of a liquid yvhich, when heated by being applied to the seat of combustion, in part volatilizes to produce a lingering blanket of dry, combustion-arresting gas,

and in part is thrownv down as an electrically non-conducting deposit, substantially as described.

12. A fire extinguishing compound coin-' geneous blanket of dry combustion-arresting gas, substantially as described.-

15. A fire extinguishing compound, comprising a liquid substantially devoid of water adapted and capable of being volatilized by the heat of the fire and producing a lingering cohering blanket of dry combustion-arresting gas and an electrically nonconducting deposit, substantially as described.

16. A fire extinguishing compound, comprising an electrically non-conducting liquidadapted and capable of being volatilized by p the hea of the fire and producing a lingering co ering blanket of dry combustionarresting gas and an electrically non-conducting deposit, substantially as described.

17. A fire extinguishing compound, comprising a liquid substantially devoid of water adapted and capable of being volatilized by the heat of the fire to produce a heavy non-poisonous, cohering and homogeneous blanket of combustion-arresting, non-inflammable gas, substantially as described.

18. The process of extinguishing fires which consists in establishing at the seat of combustion a lingering, cohering blanket of dry, combustion-arresting gas, and simultaneously causing an electrically non-conducting deposit to be thrown down, substantially as described.

20. The process of extinguishing fires which consists in causing the burning material to be enveloped with a lingering, cohering and homogeneous blanket of dry gas which also penetrates thejburning mass, by applying a liquid in such a manner that the heat of the fire causes the same to be volatilized and to produce such gaseous blanket,

substantially as described.

21. The rocess of extinguishing fires which conslsts" in enveloping the burning material with a lingering, cohering blanket of dry, combustion-arresting gas, inherently penetrative of the burning materials, substantially as described.

22. A fire extinguishing compound comprising a non-inflammable solvent, a non inflammable compound dissolved therein having more carbon atoms in its molecule than the solvent, said dissolved compound containing a halogen in its molecule.

-23.-A fire extinguishing compound comprising a non-inflammable solvent, a noninflammable compound dissolved therein having a higher boiling point than the solvent, and containing a halogen in its molecule.

24. A fire extinguishing compound comprising a non-inflammable solvent, a noninflammable compound dissolved therein having more carbon atoms in its molecule than the solvent and having a higher boiling point than the solvent, and also containing a halogen in its molecule.

25. A fire extinguishing compound comprising a non-inflammable solvent, a noninflammable compound dissolved therein having a higher boiling point than the solvent, and containing chlorin in its molecule.

26. A fire extinguishing compound comprising a non-inflammable solvent, a noninflammable compound dissolved therein having more carbon atoms in its molecule than the solvent, and also containing chlorin in its molecule.

27. A fire extinguishing compound comprising a non-inflammable solvent, a noninflammable compound dissolved therein having more carbon atoms in its molecule than the solvent and having a higher boiling point than the solvent, and also containing chlorin in its molecule.

28. A fire extinguishing compound comprising carbon tetrachlorid in which is dissolved a non-inflammable carbon compound containing a halogen in its molecule, and with more than one carbon atom in its molecule.

29. A fire extinguishing compound comprising carbon tetrachlorid in which is dissolved a non-inflammable carbon compound containing a halogen in its molecule, with more than one carbon atom in its molecule,

and a boiling point higher than carbon,

tetrachlorid.

This specification signed and witnessed this 22nd day of May 1909.

JONAS W. AYLSWORTI-L Witnesses:

DYER SMITH, ANNA R. KLEHM. 

